Standard 3kV unipart insulator type CN 560 by IMEC (Industria Milansese Elettro Ceramica) dating 1973: it completes the family I have in my collection, having also the RICHARD GINORI, FIL, and VACCARI version. Now I keep searhing the brown version mfd by Vaccari, seldom used in the feeding lines of the old tramways in Genoa town